# -*- coding: utf-8 -*-
# @Time    : 2021/10/17 10:43
# @Author  : super

import os
# print(os.rename("a.json","b.json"))
# print(os.remove("b.json"))
# print(os.mkdir("b.json"))
# print(os.rmdir("b.json"))
# print(os.getcwd())
# print(os.mkdir("a"))
# print(os.chdir("a"))
# open("b.json","w").close()
print(os.listdir())
